How it Works
Topcon
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GTS-821A
User Manual
144 pgs3.75 Mb0
Table of contents
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Topcon GTS-821A, GTS-823A, GTS-825A, GTS-822A User Manual

INSTRUCTION MANUAL
AUTO TRACKING TOTAL STATION
GTS-820A
SERIES
GTS-821A GTS-822A GTS-823A
GTS-825A

FOREWORD

General Hand l ing Prec autions

Before starting work or operation, be sure to check that the instrument is functioning correctly with normal performance.
Do not submerge the instrument into water.
The instrument can not be submerged underwater. The instrument is designed based on the International Standard IP54, therefore it is protected from the normal rainfall.
Setting the instrument on a tripod
When mounting the instrument on a tripod, use a wooden tripod when possible. The vibrations that may occur when using a metallic trip od can effect the measuring precision.
Installing the tribrach
If the tribra ch is ins talle d inco rrec tly, the measuring pr ecis ion coul d be effec ted . Occasional ly check the adjusting screws on the tr i brach. Make s ur e the base fix ing lever is locked and the base fixing screws are tightened. TR-5 or TR-5P tribrach should be used for prism side when the traverse s urveys is perfor med .
FORE W ORD
Guarding the instrument against shocks
When tr anspo r ting t he instrum ent, p ro vide some pr otection t o m in imize risk of shocks. Heavy shocks may cause the measurement to be faulty.
Carrying the instrument
Always carry the instrument by its handgrip.
Exposing the instrument to extreme heat.
Do not leave the instrument in extreme heat for longer than necessary. It could adversely affect its performance.
Sudden changes of temperature
Any sudden change of temperature to the instrument or prism may result in a reduction of measuring distance range, i.e when taking the instrument out from a heated vehicle. Let instrument acclimate itself to ambient temperature.
Battery level check
Confirm battery level remaining before operating.
Memory back up
The instrument has a built in battery for memory back up. If the battery power is low, “Back up battery empty” will display. It is still possible to measure the distance and the angle , but t h e measured data and the parameter setting can be lost . Cont act your dealer, to replace the battery.
Taking the battery out
It is recommended not to take the battery out during the power is on. All the data stored is possible gone at th at t i me. So please do your assembling or ta ki ng the bat ter y out after the pow er i s off .
No responsibility
TOPCON Corporation has no responsibility for loss of data stored in the memory in case unexpected accidents.
1
FORE W ORD
Rotating the instrument and telescope
Rota t i on of t he inst rum ent or tel escope is driven electronically in normal operation. Do not disturb the rotation.
Storage in the case
Keep the telescope horizontally and turn the instrument to align its mark with the lower base mark (Storage mark). Keep its objective lens si de downward . Sto r ing it in the case in any other way may cause damage. Hold the hand grips and base with both hands, when taking the instrument out of the case, or putting the equ i pm ent i n th e case.
Maintenance for driving parts.
Every 4,000~5, 000 hours operation in total, cha nge grease of driving parts. Contact your dealer or TOPCON Head Office for the maintenance.
2
FORE W ORD
G

Display for Safe Use

In order to encourage the safe use of products and prevent any danger to the operator and others or damage to properties, important warnings are put on the products and inserted in the instruction manuals. We suggest that everyone understand the meaning of the following displays and icons before reading the “Safety Cautions” and text
Display Meaning
WARNIN
CAUTION
•Injury refers to hurt, burn, electric shock, etc.
•Physical damage refers to extensive damage to buildings or equipment and furniture.
Ignoring or disregard of this display may lead to t he danger of death or serious injury.
Ignoring or disregard of this display may lead to personal injury or phys­ical damage.

Safety Caut ions

WARNING
•There is a risk of fire, electric shock or physical harm if you attempt to disassemble or repair the instrument yourself.
This is only to be carried out by TOPCON or an authorized dealer, only!
•Cause eye injury or blindness.
Do not look at the sun through a telescope.
•Laser beams can be dangerous, and can cause eye injury's if used incorrectly.
Never attempt to repair the instrument yourself.
•Cause eye injury or blindness.
Do not stare into beam.
•High temperature may cause fire.
Do not cover the charger while it is charging.
•High temperature may cause fire.
Do not connect the battery to an instrument while it is charging.
•Risk of fire or electric shock.
Do not use damaged power cable, plug and socket.
•Risk of fire or electric shock.
Do not use a wet battery or charger.
•May ignite explosively.
Never use an instrument near flammable gas, liquid matter, and do not use in a coal mine.
•Battery can cause explosion or injury.
Do not dispose in fire or heat.
•Risk of fire or electric shock.
Do not use any power voltage except the one given on manufacturers instructions.
•Battery can cause outbreak of fire.
Do not use any other type of charger other than the one specified.
•Risk of fire.
Do not use any other power cable other than the one specified.
•Battery can cause outbreak of fire.
Do not block up the vent of the battery.
•The short circuit of a battery can cause a fire.
Do not short circuit battery when storing it.
3
FORE W ORD
CAUTION
Use of controls or adjustment or performance of procedures other than those specified herein
may result in hazardous radiation exposure.
Let the laser beam reach the aimed object or the target without anybody else in the laser beam path. In case you operate laser beam open, avoid radiating laser beam to the height of man's head. It is quite possible for the beam to enter into one's eyes, and it is possible to lose visual sight temporarily, and lose one's caution and awareness of other dangers - avoid glaring beam.
Do not connect or disconnect equipment with wet hands, you are at risk of electric shocks if you do!
Risk of injury by overturn the carrying case.
Do not stand or sit on th e carrying cases.
Please note that the tips of tripod can be hazardous, be aware of this when setting up or carrying the tripod.
Risk of injury by falling down the instrument or case.
Do not use a carrying case with a damaged which belts, grips or latches.
Do not allow skin or clothing to come into contact with acid from the batteries, if this does occur
then wash off with copious amounts of water and seek medical advice.
A plumb bob can cause an injury to a person if used incorrectly.
It could be dangerous if the instrument falls over, please ensure you attach a handle battery to
the instrument securely.
Ensure that you mount the Tribrach correctly, failing to do so may result in injury if the tribrach
were to fall over.
It could be dangerous if the instrument falls over, please check that you fix the instrument to the
tripod correctly.
Risk of injury by falling down a tripod and an instrument.
Always check that the screws of tripod are tightened.

User

1)This product is for professional use only! The user is required to be a qualified surveyor or have a good knowledge of surveying, in order to understand the user and safety instructions, before operating, inspecting or adjusting.
2)Wear the required protectors (safety shoes, helmet, e tc.) when operating.

Exceptions fr om Respo ns ibility

1)The user of this product is expected to follow all operating instructions and make periodic checks of the product’s performance.
2)The manufacturer, or its representatives, assumes no responsibility for results of a faulty or intentional usage or misuse including any direct, indirect, consequential damage, and loss of profits.
3)The manufacturer, or its representative s, assumes no responsibility for co ns equential damage, and loss of profits by any disaster, (an earthquake, storms, floods etc.). A fire, accident, or an act of a third party and/or a usage any other usual conditions.
4)The manufactur er , or its represent ativ es, assumes no respon si bility for any damage, and loss of pr ofits due to a change of data, loss of data, an in terruption of business etc., caused by using the product or an unusable product.
5)The manufactur er , or its represent ativ es, assumes no respon si bility for any damage, and loss of pr ofits caused by usage except for explained in the user manual.
6)The manufacturer, or its representative s, assumes no responsibility for damage c aused b y wrong movemen t , or ac t i o n due to connecti n g with o th er products.
4

Laser Safety

GTS-820A series uses the visible laser beam for auto tracking, optical communication. The GTS-820A series products are manufactured and sold in accordance with “Radiation Safety of Laser Products, Equip men t Classificati on, Require me nts and Use r‘s Guid e” (I EC Pub li cation 60825-1 ) or “Performance Standards for Light-Emitting Products” (FDA/BRH 21 CFR 1040) provided on the safety standards for laser beam. As per the said standards, GTS-820A series is classified as “Class 2 (CLASS II) Laser Products”. The laser beam belongs not very dangerous type but we request you to keep and understand “Safety standard for users” as mentione d in the manual inst ruction. In case of any failure, do not disassemble the instrument. Contact TOPCON or your TOPCON dealer.
Laser class of each mode is as foll o ws.
Mode Laser class
Autotracking Class 1 (CLASS II)
Optical communication Class 2 (CLASS II)
Labels
Find the labels which describes the caution and safety about the laser beam as follows in GTS-820A series. We request you to replace it one anytime the caution labels are damaged or lost and paste a new one at the same place. You can get the labels from Topcon or your dealer.
Warning Label
Beam ap ertur e
Explanatory Label
Beam ap ertur e
CAUTION
LASER RADIATION-DO NOT
STARE INTO BEAM
WAVE LENGTH 660, 690nm
1mW MAXIMUM OUTPUT
DIODE LASER
CLASS II LASER PRODUCT
FORE W ORD
Each label is differed by the market.
GTS-820A series
Symbol marks while the laser is emitting.
The following symbol marks of instrument status will indicate that the laser is emitting.
Marks
V : 87°55'45" HR: 180°44'12"
SD HD NEZ 0SET HOLD P1↓
The symbol mark
Status of
instrument
Auto-collimating
Auto-tracking
Waiting
Searching
5

Contents

FOREWORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
General Handling Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Display for Safe Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
User . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Exceptions from Responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Laser Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Standard Set Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1 NOMENCLATURE AND FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1 Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
1.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.3 Operating Key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
1.4 Function Key (Soft Key) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
1.5 Star key (*key) mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
1.6 Auto Power Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
1.7 Data Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11
1.8 Rotating Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
1.8.1 Rotating by H/V Shuttle and H/V Jog. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
1.8.2 Auto Inversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
1.8.3 Rotating automatically to a required Horizontal and Vertical angle . . . . . . . . . . 1-11
1.9 Using together with RC-2II Remote Control System. . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
1.10 Using connecting with Personal Computer (PC). . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
2 PREPARATION FOR MEASUREMENT . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1 Power Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2 Setting Instrument Up For Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.3 Power Switch Key ON. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.4 Battery Level Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.5 Main Menu Icons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.6 Vertical and Horizontal Angle Tilt Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
2.7 Compensation of Systematic Error of Instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2.8 Resume Mode ON/OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2.9 How to Enter Numerals and Alphabet Letters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2.10 Memory Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2.11 Inclination of Prism and Measuring Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
3 AUTOMATIC TRACKING / AUTOMATIC COLLIMATION . . . . . . . . . . 3-1
3.1 Automatic Tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.2 Automatic Collimation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.3 Range of Laser for Auto-tracking and Auto-collimating . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.4 Setting Parameters for Auto-Tracking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.4.1 Setting Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.4.2 How to set the parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
4 STANDARD MEASUREMENT MODE . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1 Angle Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1.1 Measuring Horizontal Angle Right and Vertical Angle . . . . . . . . . . . . . . . . . . . . . 4-1
4.1.2 Switching Horizontal Angle Right/Left . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.1.3 Measuring from the Required Horizontal Angle. . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.1.4 Vertical Angle Percent Grade(%) Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.1.5 Automatic Rotation to a Required Horizontal and Vertical Absolute Angle . . . . .4-4
4.2 Distance Measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4.2.1 Setting of the Atmospheric Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4.2.2 Setting of the Correction for Prism Constant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4.2.3 Distance Measurement (Continuous Measurement) . . . . . . . . . . . . . . . . . . . . . . 4-5
4.2.4 Distance Measurement (Single/N-times Measurement) . . . . . . . . . . . . . . . . . . . . 4-6
4.2.5 Fine / Coarse Measuring Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.2.6 Stake Out (S-O) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.3 COORDINATE MEASUREMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4.3.1 Setting Coordinate Values of Occupied Point . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4.3.2 Setting of the Instrument Height / Prism Height . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
4.3.3 Execution of Coordinate Measuring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
6
FORE W ORD
FORE W ORD
4.4 DATA OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
5 PROGRAM MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.1 Se tt ing a D i rection Angle for B acksight Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.2 Retaining a Coordinate (STORE- NEZ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.3 Remote Elevation measurement (REM). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
5.4 Missing Line Measurement (MLM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
5.5 Line Measurement (LINE). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
5.6 Offset measurement (OFFSET) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
5.6.1 Angle Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
5.6.2 Distance Offset Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
5.6.3 Plane Offset Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
5.6.4 Column Offset Measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21
5.7 External Link. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23
5.7.1 Starting compatible communication program of AP-L1A . . . . . . . . . . . . . . . . . . 5-23
5.7.2 Setting for the communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23
5.7.3 Carrying out Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27
6 MEMORY MANAGE MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.1 View Internal Memory and Card Memory Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.2 Protect a File. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6.3 Rename a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6.4 Deleting a File. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
6.5 Copy a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
6.6 Initializing Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
7 COMMUNICATION MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.1 Setting of PROTOCOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.2 Data File In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
7.3 Data File Out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
8 PARAMETERS SETTING MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.1 Parameter Setting Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.1.1 Parameters for Measurement and Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.1.2 Parameters for communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
8.2 Setting Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
8.2.1 Parameters for Measurement and Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
8.2.2 Parameters for Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
8.2.3 Password Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
9 CHECK AND ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
9.1 Checking and Adjusting of Instrument Constant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
9.2 Checking the Optical Axis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
9.3 Checking/Adjusting the Theodolite Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
9.3.1 Checking /Adjusting the Plate Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
9.3.2 Checking /Adjusting the Circular Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
9.3.3 Adjustment of the Vertical Cross-hair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6
9.3.4 Collimation of the Instrument. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7
9.3.5 Checking / Adjusting the Optical Plummet Telescope . . . . . . . . . . . . . . . . . . . . . 9-8
9.4 Adjustment of Compensation Systematic Error of Instrument . . . . . . . . . . . . . . . . . . . 9-9
9.5 Showing Constant List and Switch ON/OFF
Compensation Systematic Error of Instrument. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11
9.6 How to adjust the date and time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12
9.7 How to Set the Instrument Constant Value. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-13
9.8 Reference Frequency Checking Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-14
9.9 Inspection and Adjustment of Optic Axis for Auto -Tracking. . . . . . . . . . . . . . . . . . . . 9-15
10 SETTING THE PRISM CONSTANT VALUE. . . . . . . . . . . . . . . . . . . . 10-1
11 SETTING ATMOSPHERIC CORRECTION . . . . . . . . . . . . . . . . . . . . 11-1
11.1 Calculation of Atmospheric Correction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
11.2 Setting of Atmospheric Correction Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
12 CORRECTION FOR REFRACTION AND EARTH CURVATURE . . . 12-1
12.1 Distance Calculation Formula. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1
13 POWER SOURCE AND CHARGING . . . . . . . . . . . . . . . . . . . . . . . . . 13-1
13.1 Rechargeable Battery BT-56Q . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1
7
FORE W ORD
14 DETACH/ATTACH OF TRIBRACH. . . . . . . . . . . . . . . . . . . . . . . . . . . 14-1
15 BATTERY SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-1
16 PRISM SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-1
17 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-1
18 ERROR DISPLAYS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-1
19 SPECIAL ACCESSORIES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-1
20 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-1
APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . APPENDIX-1
Dual Axis Compensation...... ............ ............ .. ............ ............ ............................. APPENDIX-1
Precaution when Charging or Storing Batteries.................................................. APPENDIX-3
8

Standard Set Composition

The numeric al v alue in parentheses shows t he quantity.
GTS-820A series (with lens cap) (1) Plastic carrying case (1)
Battery BT-56Q (2) Battery charger BC-27BR or BC-27CR (1)
Sun shade (1) Plastic rain cove r (1)
FORE W ORD
Plumb bo b se t (1) Tool kit with c a se [ rod pi ns , Plum b bob hook, scre w -
Plumb bob hook is included in the tool kit case.
Instruction manual (1)
(Make sure that all of the above items are with the instrument when purchased.)
Remarks:
1) Battery char ger BC- 27C R is for AC 230V us e and BC-27B R is for AC 120V use.
2) Plumb bob set and plumb bob hook are supplied for certain markets.
driver, cleaning brush ] (1)
9

1 NOMENCLATURE AND FUNCTIONS

O L (
T
L ( c
(
1 NOMENCLATURE AND FUNCTIONS

1.1 Nomenclature

Handle
aser aperture
for optical
ommunication)
bjective lens
aser aperture
for auto-tracking)
racking indicator
Sighting collimator
Handle fixing knob
Instrument height mark
Instrument center mark
Card cover lever
Battery BT-56 Q
Optical plummet telescope
Display window
Only for GTS - 821A)
Operation keys
(Only for GTS-821A)
The caution labels are pasted up GTS-820A series which describe the warning of laser beam. Refer to "Laser Safety" about label positions and their shapes.
Base fixing screw
Base (Model TR-5)
Power sup p ly connector
Serial Signal Connector-1(6pin)
Leveling screw
1-1
Telescope focusing knob
1 NOMENCLATURE AND FUNCTIONS
Handle fixing knob
Instrument height mark
Telescope grip
Telescope eyepiece
Plate level
Centronics connector
Instrument center mark
Vertical shuttle
Vertical jog
Power swi t ch
Horizontal shuttle
Horizontal jog
Circular level
Adjusting screws for circular level
Tribrach fixing lever
1-2

1.2 Display

Display
•
In general upper fo ur lines displ ay the mea suring data, and the bottom line displays the soft key function which is changed by the measuring mode.
Contrast
•
The c ontras t and i ll umination of display w i ndow are ad justed by st a r (H) key.
Heater (Au t om atic)
•
The built-in heater keeps the display functional when the temperature goes below 0°C (32 °F). To switch the heater ON or OFF, refer to Chapter 8 “PARAMETERS SETTING MODE”. When the he ater i s ON a nd the temperat ure g o es belo w 0 ° C .(32 °F), the heater automatical ly adjust the temperature to the display to keep it operating.
Example
•
1 NOMENCLATURE AND FUNCTIONS
V : 87°55'45" HR: 180°44'12"
SD HD NEZ 0SET HOLD P1
Angle measure me nt mode V-angle : 87°55’20”
H-angle : 180°44’12”
↓
V : 87°55'40" HR: 180°44'12" PSM 0.0 SD: 12.345 PPM 0.0 (m) *F.R MEAS MODE VH HD NEZ P1
Distance measurement mode Horizontal-angle : 87°55’40”
Horizontal distance : 180°44’12” Relative elevation :12.345m
Display marks
•
Display Contents Display Content
V V-angle * EDM working V% Percent grade (m) Meter unit HR H-angle right (f) Feet unit
HL H-angle l ef t F Fine mode
HD Horizontal dis t ance C Coarse mode (1mm)
VD Relative elevation T Tracking mode (10mm)
↓
SD Slope distance R Repeat meas ur ement
N N coordinate S Single measurement
E E coordinate N N-ti m es me as urem ent
Z Z coordinate ppm Atmospheric correction value
psm Prism constant value
Battery Level Indicator Refer to Section 2.4 “B attery Level Indicator” for further information.
Rotation Indicator Refer to Section 1.8 “Rotating Method” for further information.
1-3
l The symbol marks for Auto-tracking and Auto-collimating
1 NOMENCLATURE AND FUNCTIONS
Auto-collimating
Laser is emit ting
( GTS-820A serie s is i n auto­collimat ing stat u s.
Waiting ( GTS-820A serie s is i n waiting status.
Failure in auto-collimating.
Laser is off
( GTS-820A serie s could not find the target prism dur ing aut o ­collimating.
Laser is emitting

1.3 Operat ing Key

Auto-tracking
)
)
)
Laser is emitting
( GTS-820A series is in auto­tracking status.
Searching ( GTS-820A series is searching a prism.
)
Laser is emitting
)
KEY NAME FUNCTION
F1~F6 Soft key Functions are according to the displayed message. 0~9 . - Numeric key Numeric Character Entry for Preset Data A ~/ Alpha key Alpha Character Entry ESC Escape key Escape to Previous Display or Menu
*
ENT Enter key End operation of data input and accepts data
POWER Power key
Star key Option al ins tr ume nt funct i ons
ON/OFF of power source. (Power key is located on the side of the instrument.)
1-4
1 NOMENCLATURE AND FUNCTIONS

1.4 Function Key (So ft K ey)

The Soft Key Functions are labeled on the bottom of display. Soft Key functions are different for each measurement.
V : 87°55'45"5 HR: 180°44'12"5
SD HD NEZ 0SET HOLD
P1
↓
[F1] [F2] [F3] [F4]
V : 87°55'45"5 HR: 180°44'12"5
SD HD NEZ 0SET HOLD P1
TURN HSET R/L V/% TILT P2
Angle measuring
V : 90 10'20"5 HR: 120 30'40"5 PSM 0.0 HD: PPM 0.0 VD: (m) F.R MEAS MODE VH SD NEZ P1
REC SO MEAN P2
Horizontal distance measuring
Page Display
Angle
measuring
SD F1 Slope distance measur ing mode. HD F2 Horizontal distance measuring mode.
NEZ F3 Coordinate distance measuring mode.
0SET F4 Set horizontal angle to 0°00'00". HOLD F5 Horizontal angle hold. TURN F1 Turns the instrument to required angle automatically. HSET F2 Preset a horizontal angle.
R/L F3 Changes hori zontal angle ri gh t or lef t.
V/% F4 Changes the disp l ay to vertical angle or percent of grade.
TILT F5
Soft
key
Sets the tilt function, ON/OFF. If ON, the display shows tilt correction value.
Soft keys
↓
↓
↓
↓
[F5]
[F6]
V : 90°10'20"5 HR: 120°30'40"5 PSM 0.0 SD: PPM 0.0 (m) F.R MEAS MODE VH HD NEZ P1
TURN SO MEAN m/ft P2
Slope distance measur ing
N : 12345.6789 E : -12345.6789 PSM 0.0 Z : 10.1234 PPM 0.0 (m) F.R MEAS MODE VH SD HD P1
↓
TURN HT MEAN P2
Coordinate measuring
Function
↓
↓
↓
1-5
1 NOMENCLATURE AND FUNCTIONS
Page Display
Slope
distance
measuring
Horizontal
distance
measuring
Coordinate
measuring
Soft
key
MEAS F1
Starts sl ope distance mea surement mode. Changes Continuous/ N-times (single) measurement mode.
Function
MODE F2 Chang es Fine / Coarse(1mm) /Co arse(10 mm) m ode.
VH F3 Angle me asurement mode. HD F4
NEZ F5
Horizontal distance measurement mode. Displays the horizontal distance data after N-times or single measurement.
Coordinate measurement mode. Displays the coordinate after N-times or single measurement.
TURN F1 Turns the instrument to required angle automatically.
SO F2 Stake out measurement mode.
MEAN F3 Sets the number of N-time measurement.
m/ft F4 Changes distance measurement unit to meter or feet.
MEAS F1
Starts horizontal d i stance measurement mode. Changes continuous/ N-times (single) measurement mode.
MODE F2 Chang es Fine / Coarse(1mm) /Co arse(10 mm) m ode.
VH F3 Angle me asurement mode. SD F4
NEZ F5
Slope distance measuri ng mode. Display the sl ope distance af ter N-times or si ngl e measureme nt.
Coordinate measurement mode. Displays the coordinate after N-times or single measurement.
TURN F1 Turns the instrument to required angle automatically.
SO F2 Stake out measurement mode.
MEAN F3 Sets the number of N-time measurement.
m/ft F4 Switches meter or feet unit.
MEAS F1
Starts coordinate measurement mode. Changes continuous/ N-times (single) measurement mode.
MODE F2 Chang es Fine / Coarse(1mm) /Co arse(10 mm) m ode.
VH F3 Angle me asurement mode. SD F4
HD F5
Slope distance measuri ng mode. Display the sl ope distance af ter N-times or si ngl e measureme nt.
Horizontal distance measurement mode. Displays the horizontal distance data after N-times or single measurement.
TURN F1 Turns the instrument to required angle automatically.
HT F2 Input Instrument / prism height values.
MEAN F3 Sets the number of N-time measurement.
m/ft F4 Switches meter or feet unit.
SET F5 Pre-set instrument coordinate values.
1-6
1 NOMENCLATURE AND FUNCTIONS

1.5 Star key (*key) mode

Press the (H) key to view the instrument options. Since there are three screens of options, press [F6](1↓) soft key to view the next screen. The following instrument options can be selected from the (H):
Screen One
•
1)View Dat e & Time
2)Auto-tracking [F1]
3)Auto-collimating [F2]
4)Set the parameters for Auto-tracking.[F3]
5)Auto- inversio n [F4]
6)Electric circular graphic display[F5] Screen Two
•
7)Adjustment the co ntrast of the displa y [F1 & F2]
8)Turn the back light of the display ON/OFF [F3]
9)Reticle illumination---Off / Low / Medium / High [F4]
10) View free memory for internal and card memory [F5 ] Screen Th ree
•
11) The light acceptance quantity level (signal level) is displayed.[F1]
12)Set the Temperature, Pressure, Atmospheric Correction Value (ppm), and Prism Constant Va lue ( PSM ) [F2]
13)Turn the Tracking Indicator option ON/OFF [F3]
Auto-tracking
Auto-collimating
Set parameter for Auto-trackin g
Auto- inversion
Electric circular graphic display
Date & Time
Cont rast adjustment
Displaying Signal Level
2003-10-10 14:30:40
1
↓
View free memory for Card/Internal Memory
Back Li ght of Displ ay
Reticle illumination
2003-10-10 14:30:40
2
↓
Set the Temperature, Pressure, Atmospheric Correction Value (PPM), and Prism Constant Value (PSM)
Trac ki ng indicator
2003-10-10 14:30:40
3
↓
Screen 1
Screen 2
Screen 3
1-7
1 NOMENCLATURE AND FUNCTIONS
1) View Date & Time
The date and time can be viewed on both screens. To change the displayed order of the date, (Date/ Month/Year), (Month / Date / Ye ar) or (Year/Month/Date), see Chapter 8 “PARAMETERS SETTI NG MODE” . To set the date a nd time, see Chapter 9 “CHECK AND ADJUSTMENT”.
2) Turn the auto-trackin g ON/OFF
Press the [F1] key to start auto-tracking. See Section 3.1 “Automatic Tracking” .
3) Turn the auto-collima tin g ON/OFF
Press the [F2] key to start auto-col lima ting. See Section 3.2 “Automatic Collimation” .
4) Set the parameters for the auto-tracking
A proper setting for each parameter such as tracking pattern, tracking range, waiting time, tracking speed and trac ki ng se nsit ivity. See Section 3.4 “Set ting Par a me ter s for Aut o -Tracking” .
5) Auto Inversion
Pressing the [F4] key causes the instrument to reverse and turn the telescope and instrument automatically.
l To stop auto rotating in case of emergency, press any keys except POWER key. l During auto rotation, do not disturb the instrument.(Stopping the rotation with a touch of the hand).
Such action may cause trouble or harm to instrument or operator.
6) Electr ic circular level graphic display
Electric circular level can be displayed by graphic. This function is good for level the instrument when the circular level is difficult to see directly. Press the [F5] key to display the graphic.
In the displays of reverse side, the graphic bub ble mov es in reverse.
X:------------­Y:-------------
Rotate the leveling screws while observing the display. After leve ling, press [F1]. The display cha nge s to the prev ious mode.
7) Adjustme nt the contrast of the dis p lay
This enable you to adjust the contrast of the display. Press the [F6] key to get to Screen 2 on the display. Press the [F1] or [F2] key to brighten or dim the display.
8) Turn the display back light ON/OFF
When the back light is OFF, the light bulb icon is dark. Press the [F6] key to get to Screen 2 on the display. To turn the back light ON, press the [F3] key. Press [F3] again to turn the back light OFF.
OFF ON
X:+0°00'00" Y:+0°00'00"
1-8
1 NOMENCLATURE AND FUNCTIONS
9) Reticle illumination (OFF/Low/Middle/High)
Press the [F6] key to get to Screen 2 on the display. Press the [F4] key to turn the reticle illumination ON. Continuing to press [F4] will change the intensity options.
OFF
10) View free memory
The amount of free memory for the card or internal memory can be displayed. Press the [F6] key to get to Screen 2 on the display. Press the [F5] key to view free memory. The card memory icon (top left side of the display) shows the size of the card and the amount of free memory. The second icon shows the amount of free internal memory.
Card Memo r y
Internal Memory
See Chapter 6 “MEMORY MANAGE MODES”, for further options and instructions.
11) Set audio mode
The light acceptance quantity level (Signal level) is displayed in this mode. When reflected light from the prism is rece i ved , a buzzer soun ds. This function is good for easy collimation when the target is difficult to find. Press the [F1] key on scre en 3. The received return signal level is displayed with bar graph as follows.
Low
Middle
512KB
High
315KByte
1882KByte
No light acceptance
(1) To stop the buzzer, see Chapter 8 “PARAMETERS SETTING MODE”. (2) Also, it is possible to display the signal level in Distance Measuring Mode.
12)Setting Temperature, Pressure, Atmospheric correction value (ppm), Prism constant value (PSM)
The temperature, pressure, PPM, and PSM can be viewed by pressing the [F2] key on screen 3 . The received return signal level is displayed with bar graph as follows. Refer to Chapter 10 “SETTING THE PRISM CONSTANT VALUE” and Chapter 11 “SETTING ATMOSPHERIC CORRECTION”, for further instructions.
Minimum quantity level
Maximum quantity l evel
1-9
1 NOMENCLATURE AND FUNCTIONS
13)Tracking Indicator
A man who is staying on line with t he direc t ion of GTS-820A series or automatic tracking status by emitted LED light (orange color) from GTS-820A series.
Operation
•
Pressing [F3] key on screen three functions Tracking Indicator. The tracking indicator status will be changed a cco rding to the typ e of auto tra cki n g m ode an d i ts co ndi tions. A man from the prism side can recognize t he status of instrument. When angle measuring value turns stable during track ing still object, the tracking indicator changes from quick con tinu ous fla shing to qu ick inte rm itten t flashing. S o you can dec ide fro m the sign of fla shing for recording data timing at one person surveying.
OFF ON
Meaning of Tracking Indicator ON or Flashing
Trac ki ng Indicator Tracking status of instrument Continuous ON Wait status Slow flashing Manual mode
Quick continuous flashing
Quick intermittent flashing
In case angle measuring value is instable during auto tracking mode.
In case angle measuring value is stable during auto tracking mode.
l The function of the Tracking Indicator will be used as a guide to know the status of GTS-820A
series from the prism side. This is not a function to determine precise collimating for measuring.
l The quality of its results will depend on the weather conditions and the use's eyesight. l Sometimes happens d i fficult y of seeing t he t r ack i ng ind i cator becaus e too mu ch bright of the beam
for tracking.
l Using Tracking Indicator mode will result shorter in reduced time out of the battery.
1-10
1 NOMENCLATURE AND FUNCTIONS

1.6 Auto Power Off

The Auto Power OFF feature can be set from 1 to 99 minutes. If no keys are pressed within the set time, the Auto Power OFF will automatically turn the instrument OFF in order to save the battery time. See Chapter 8 “PARAMETERS SETTIN G MODE”, for furth e r inst ru ct ions.

1.7 Data Output

When GTS-820A series receives data output command from an external connected device, the measured data will be output by GTS-820A series. Select from the following
2 ways for the output. (For setting, see Chapter 8 “PARAMETERS SETTING MODE” .)
REC-A : The measurement is started and new data is output. REC-B : The data being displayed is output.

1.8 Rotating Method

1.8.1 Rotating by H/V Shuttle and H/V Jog

H/V shuttle or H/V jog can be used to rotate the instrument manually. The shuttle movement or displacement is proportional in speed and size of angle desired. A small, slow turn of the shuttle will result in a slow sma ll angl e displaced. L i kew ise, a larger abr up t turn of the shuttle will result in a coarse angle displacement. H/V jog can be used for accurate collimating of the target much like a standard tangent screw.

1.8.2 Auto Inversion

Pressing the [F4] key in Star Key mode causes the instrument to reverse and turn the telescope and instrument automa tically. l To stop auto rotating by auto inversion key in case of emergency, press any keys except POWER
key.
l During auto rotation, don't disturb the instrument.(Stopping the rotation with a touch of the hand).
Such action may cause trouble or harm to instrument or operator.
See Section 1.5 “Star key (*key) mode” for further instructions.

1.8.3 Rotating automatically to a required Horizontal and Vertical angle

In Standard Measu rem ent Modes, the instrument can be rot ate d autom at ically by inpu t a required horizontal and/or vertical angle. For further instructions, see Section 4.1.5 “Automatic Rotation to a Required Horizontal and Verti cal Absolute Angle” .
V : 87°55'45"5
This mark will appear while the instrument is rotating automatically.
HR: 180°44'12"5
SD HD NEZ 0SET HOLD P1
↓
1-11
1 NOMENCLATURE AND FUNCTIONS

1.9 Using together with RC-2II Remote Control System

Using together with RC-2II Remot e Con tr ol System makes it possibl e to opti c al communi cat e betwe en the inst rument and rem ot e controller RC-2RII, the pris m side. This gi ves easy operat ion by one man surveying in applying programs. Also connecting data collector to remote con troller, you can manage communication reciprocally between the instrument and direct to data collector.
Turn-round function
You can turn the GTS-820A series round to the remote controller RC-2RII side easily by [Turn-round] key of the remote controller RC-2RII. This function helps to increase one man surveying efficiency.
RC-2RII
See to Section 5.7 “External Link” and Chapter 8 “PARAMETERS SETTING MODE” for further information.
l Set the transmit path to " RC". l Set the transmit channel same as RC-2RII side. l To execute transmission, set the remote in Programs mode to [Remote].
1-12
1 NOMENCLATURE AND FUNCTIONS

1.10 Using connectin g with Personal C om pu ter (P C )

The auto-tracking function or auto collimating function makes easy remote control of the instrument from PC. The followings are the main communication commands and explanations. How to communicat e or more information s of communica ti on com ma nd, you can see the i nterface manua l which provided optiona ll y.
Commands Action of GTS-820A series
Transmit
command
Mode setting
Transmit command for measured data
Transmit command for tracking mode
Transmit command for battery level The battery level will be out put.
Transmit command for coordinate of instrument point
Transmit command for tracking parameter
Setting of angle me asurement
Setting of distance measuremen t
Setting coor dinate of instrument point Setting the coo rdinate of instru me nt poi nt .
Setting the track i ng para me t er
Each measured data will be out put according to t he command type.
The status of Aut om at ic Tr acking mode will be out put.
Setting coordinate of instrument point will be ou t put.
Each setting tracking parameter of instrument will be out put according to the command type.
Each selecting mode in horizontal angle or angle measurement can be decided according to t he purpose of comman d.
Setting the measurement mode for distance me asurement.
Setting each tracking parameter according to t he command.
Action
T.I. ON / OFF ON / OFF of Tracking indicator.
Rotating command Rotating of setting angle.
Inversion Inversion movement.
Setting trac ki ng mo de
Setting from automatic tracking mode to each command mode.
1-13

2 PREPARATION FOR MEASUREMENT

2 PREPARATION FOR MEASUREMENT

2.1 Power Connectio n

(unnecessary if on-board Ni-MH battery BT-56Q is used)
See below for connecting the external battery pack.
Battery pack BT-3Q
l
Power cord , PC-5 is used.
Large capacity battery pack BT-3L
l
Power cord PC-6 is used.
l When using a external battery, the rechargeable battery BT-56Q should be attached
(The instrument will lack in balance if the internal battery BT-56Q is removed.)
The external batter y and th e inter nal ba ttery can be used at the same time. The GTS- 820 A seri es will select a battery due to the battery remaining automatically.
PC-5
Connector ends
BT-3Q
PC-5
PC-6
PC-5 or PC-6
BT-3L
2-1
AC-6
PC-6
External 12V Battery
2 PREPARATION FOR MEASUREMENT
Leveling screw C
9

2.2 Setting Instrument Up For Measurement

Mount the instrument to the tripod. Level and cente r the instr um en t pre cise l y to ins ur e the best performance. Use tripods with a tripod screw of 5/8 in. diameter and 11 threads per inch, such as the Type E TOPCON wide- frame wooden tripod.
Reference: Leveling and Centering the Instrument
1. Setting up the Tripod
First, e xtend t he ex tens ion legs to s uita ble l engths and tighten t he screws on thei r midsec ti ons.
2. Attaching the Instrument on the Tripod Head
Place the instrument carefully on the tripod head and slide the instrument by loosening the tripod screw. If the plumb bob is p osit ioned right over the center of th e point, slightl y ti gh t en the tri po d screw.
3.
Roughly Leveling the Instrument by Using the Circular Level
1 Turn the leveling screws A and B to move the
bubble i n t he c i rcular level. The bub ble is now located on a line perpendicular to a line running thr oug h the cen ters of t he two l evel ing screws be i ng adjusted.
Leveling screw A
2 Turn the leveling scre w C to bring the bubble
to the center of the cir c ular level.
4. Centering by Using the Plate Level
1 Ro tat e the instrument horizontally by using
the Horizontal motion/c l am p scr ew and place the plate level parallel with the line connecting levelin g screw s A and B, and then brin g the bubble to the center of the plate level by turning leveling screws A and B.
Leveling screw B
2 Ro t ate the instrument 90° (100g) around its
vertical axis and turn the remaining leveling screw or C to center the bubble once more.
Leveling screw C
0
3 Repeat the procedures 1 and 2 for each 90°
(100g) rotation of the instrument and check whether the bubble is corr ectly centere d for all four points.
5. Centering by Using the Optical Plummet Telescope
Adjust the eyepiece of the optical plummet telescope t o your eyes ight. Slide the instrument by loosening the tripod screw, place the point on the center mark, and then tighten the tripod screw. Sliding the instrument carefully not to rotate that allows you to get the least dislocation of the bubble.
Point
Center mark
6. Completely Leveling the Instrument
Leveling the instrument precisely in a similar way to 4. Rotate the ins trum ent and check to see that the bubble is in the center of the plate level regardless of telescope direction, then tighten the
Leveling screw A
Leveling screw B
tripod screw hard.
2-2

2.3 Power Switch Key ON

)
g
d
e
Power ON
2 PREPARATION FOR MEASUREMENT
1) Confirm the instrument is leveled.
2) Turn the power switch ON.
Input a password [ ]
Self check mode
ESC
X:+0°00'00" Y:+0°00'00"
Self checking ...
[ 1/6 ]
Self checking ...
[ 6/6 ]
3) Type your password. Self checki n g mode will disp lay.
To skip the self checking , pr ess [F1 ] (ES C key.
Level the ins trumen t by turning t he leveli n screws. When the leveling is within ±30" and stable, the self checking will start.
The instrument will turn automatically and the tilt sensor offset value will be measure and me mo rized.
2003-10-10 14:30
Prog
Std Mem
Main menu icons
Self checking option
l
The self checking f unc ti on is to che ck i nternal communicat ion and ti lt sens or of f set value. When ambient tem per at ur e is cha nged or the i nstrument is not balanc ed by its int e rnal battery is attached or detach ed, the self che cki n g is reco mm end ed.
Password option
l
Setting a password (Maximum 10 digits number) and activating ON of password option can be helpful to avoid miss operation by unauthorized operator. Setting password option is necessary to use this function. To set password option, see Chapter 8 “PARAMETERS SETTING MODE” .
Choosing the first mode when turning on the instrum ent
l
You can choose the first mode from the following modes when turning on the instrument.
1. Main Menu 2. Standard Measurement Mode 3. External Link See Chapter 8 “PARAMETERS SETTING MODE” .
ON/OFF of a self check function can also be chosen.
l
See Chapter 8 “PARAMETERS SETTING MODE” . l Confirm the battery power remaining on the display. Replace with charged battery or charge when
battery level is low. Refer to Section 2.4 “Battery Level Indicator” .
Comm
Adj
Para
After checki ng, the mai n me nu icon s wi ll b shown.
Battery Power Remaining Display
2-3

2.4 Batter y Level Indicator

The battery power indicator shows the level of battery strength.
Indicates Battery Power Remaining
2003-10-10 15:30:40
2 PREPARATION FOR MEASUREMENT
Measurement is possible.
Prog
Note:
1) The battery operating time will vary depending on the environmental conditions, such as ambi ent temper ature, chargin g time, and t he number of tim es charging and discharging the battery.
2) In low temperature (especially while the heater of display is working), the battery operating time will shorten to one-half of normal temperature use.
3) The indicator for battery power remaining shows the power level during each measurement mode. The condition indicated for the battery power remaining in the angle measurement mode may not be adequate to measure a distance. Changing from angle mode to distance mode during a poor battery condition may cause the EDM not to measure a distance. We recommend that you check the battery condition before going into the field.
4) Also note, when changing from one measurement mode to another, the battery indicator may not show a decr eas e or an i ncr ease i mm ediately. The batt ery i ndicator syste m was desi gne d to show the general condition for the battery strength. It does not respond instantly.
5) For more information on battery usage, refer to Chapter 13 “POWER SOURCE AND CHARGING” .
Mem Comm
Std
* Battery power remaining display is omitted in this manual.
Adj
Para
Blinking
The power is p oor. The batter y sho ul d be recharged or replace the battery. (Angle me asurent can only be possi ble, the auto-collimating, auto-tracking and distance maesurenat can not be possible.)
Measurement is impossible. Need to recharge or replace the battery.
2-4

2.5 Main Menu Icons

The main menu icons are as follow s. Select t he men u by pressi ng soft k eys ([F1]~[F6]).
2003-07-10 15:30:40
2 PREPARATION FOR MEASUREMENT
Prog
Std
Mem Comm
Adj
Para
PARAMETERS SETTING MODES
The PARAMETE RS SETTING MODES are stored in memory once the instrument is OFF. (See Chapter 8 “PARAMETERS SETTING MODE”.)
ADJUSTMENT MODES
Used for checki ng and adjust m ent.
l Systematic errors adjust m ent for com pensa tion. l Show compensation value s of systemati c erro rs of
instrument
l Set Date & Time l Set instrument constant value l Reference frequency of EDM l Optic Axis for Auto-tracking
(See Chapter 9 “CHECK AND ADJUSTMENT”.)
COMMUNICATION MODES
l Set communica ti on with external instrument l Input/Output a data file l Load application program.
(See Chapter 7 “COMMUNICATION MODES”.)
MEMORY MANAGE MODES
l Display memory status l Pro tect/ Er as/Renam e/Copy File s, l Initialize a card or internal memory.
(See Chapter 6 “MEMORY MANAGE MO DES” .)
STANDARD MEASUREMENT MODES
l Angle measurement l Distance measurement l Coordinate measurement
(See Chapter 4 “STANDARD MEASUREMENT MO DE ” .)
PROGRAM MODES ( APPLICATION MEASUREMENT)
l Set a direction angle for h orizontal orientation l Retain Coordinate (STORE-NEZ) l Remote elevation measuremen t l Missing line me asurement l Line measurement l External link l Off set measurement
(See Chapter 5 “PROGRAM MODES” .)
2-5
2 PREPARATION FOR MEASUREMENT
V
W
X
S
P
O
T
Q
D
U
R
|

2.6 Vertical and Horizontal Angle Tilt Correction

When the tilt sensors are activated, automatic correction of vertical and horizontal angle for mislevelment is displayed. To ensure a precise angle measurement, tilt sensors must be turned on. The display can also be used to fine level the instrument. If the (TILT OVER) display appears the instrument is out of automatic compensation range and must be leveled manually.
Zenith
Standing axis
Standing axis
Inclination of the standing axis in the X direction
Zenith
Inclinati on of the standing axis in the Y direction
X
U
R
|
Trunnion axis
Horizontal
W
V
T
S
Q
P
D
O
l GTS-820A seri es compensates bot h th e vert i cal angle and the hor i zontal angle r eadings due to
inclination of the standing axis in the X and Y directions.
l For more information about dual axis compensation, see Chapter “APPENDIX” “Dual Axis
Compensation”.
When the instrume nt t il ted ove r correc t ion range.
X: Y:
Rotate the leveling screws and level the instrument. After leveling (when each axis is within ±1'30 "), the display returns to the previous mode automatically.
X:+0°00'00" Y:+0°00'00"
X,Y tilt correction range : within ±4'
l The display of Vertical or Horizontal angle i s unst able when i nst ru me nt is on an uns ta ble stage or a
windy day. You can turn off the auto tilt correction function of V/H angle in this case. To set TILT correct ion mod e ON/O FF, refer to next page or Chapter 8 “P AR AME TE RS SETTI N G MODE ”.
2-6
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